WO2013057940A1 - Dispositif électronique - Google Patents

Dispositif électronique Download PDF

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Publication number
WO2013057940A1
WO2013057940A1 PCT/JP2012/006636 JP2012006636W WO2013057940A1 WO 2013057940 A1 WO2013057940 A1 WO 2013057940A1 JP 2012006636 W JP2012006636 W JP 2012006636W WO 2013057940 A1 WO2013057940 A1 WO 2013057940A1
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WO
WIPO (PCT)
Prior art keywords
panel
vibration
electronic device
touch panel
region
Prior art date
Application number
PCT/JP2012/006636
Other languages
English (en)
Japanese (ja)
Inventor
祐介 足立
亮 奥村
Original Assignee
パナソニック株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by パナソニック株式会社 filed Critical パナソニック株式会社
Priority to CN201280004430.XA priority Critical patent/CN103282868B/zh
Priority to JP2013526253A priority patent/JP5343179B1/ja
Publication of WO2013057940A1 publication Critical patent/WO2013057940A1/fr
Priority to US13/919,053 priority patent/US8970534B2/en
Priority to US14/040,934 priority patent/US9117994B2/en

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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/80—Constructional details
    • H10N30/87—Electrodes or interconnections, e.g. leads or terminals
    • H10N30/872—Interconnections, e.g. connection electrodes of multilayer piezoelectric or electrostrictive devices
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/016—Input arrangements with force or tactile feedback as computer generated output to the user
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
    • G06F3/03547—Touch pads, in which fingers can move on a surface
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/50—Piezoelectric or electrostrictive devices having a stacked or multilayer structure

Definitions

  • This disclosure relates to an electronic device including a touch panel.
  • an electronic device equipped with a touch panel performs an input operation when an operator directly touches the surface of the touch panel. Even if the capacitance changes when the operator touches the touch panel surface, the operator cannot tactilely recognize the capacitance change. For this reason, the operator cannot determine whether or not the input operation has been performed correctly based on the sense of touch of the fingertip. This was a great stress for the operator.
  • Patent Document 1 discloses a touch panel with a tactile presentation function that detects an input operation to the touch panel, vibrates the touch panel, and gives a tactile feeling to the operator.
  • the present disclosure provides an electronic device including a touch panel that presents a more improved tactile sensation.
  • An electronic apparatus includes a base, a panel, a support unit that supports the panel with respect to the base, and a vibration unit that vibrates the panel at a predetermined frequency. Including a first region located in a vibration node portion and a second region located in a portion other than the node portion of the panel, and the rigidity of the support portion in the first region is greater than the rigidity in the second region. Is also small.
  • FIG. 1 is an external perspective view of an electronic device 100 according to an embodiment.
  • 1 is an exploded perspective view showing a configuration of an electronic device 100.
  • FIG. It is a perspective view of a vibration part.
  • FIG. 3 is a cross-sectional view taken along the line A-A ′ of FIG. 2.
  • (A), (b) shows the output voltage waveform from the drive part 301, (c) shows the voltage waveform applied.
  • (A) is a plan view of the touch panel 102 supported by the base 201 by the support portion 202, and (b) shows a B-B 'cross section in FIG. 6 (a).
  • (A) shows the vibration distribution of the touch panel 102 when driven at a certain frequency, and (b) shows the waveform of the amplitude.
  • (A) to (f) show other examples of the cross section of the first region 202 a of the support portion 202.
  • the inventor of the present application examined the mounting structure of the touch panel with a tactile presentation function disclosed in Patent Document 1 in detail. As a result, it was found that the vibration of the touch panel may not be detected with sufficient magnitude depending on the position of the finger touched by the operator. In view of such a problem, the present inventor provides an electronic device in which a difference in tactile sensation due to a touch position is suppressed.
  • the long side direction of the electronic device 100 is defined as the X direction
  • the short side direction is defined as the Y direction
  • the thickness direction is defined as the Z direction.
  • FIG. 1 is a perspective view showing an appearance of the electronic device 100 on the display surface 102a side.
  • the electronic device 100 includes a display unit 101, a touch panel 102 disposed so as to cover the display unit 101, and a housing 103.
  • the display unit 101 may be a liquid crystal display device, an organic electroluminescence display device, an electronic paper type display device, or the like.
  • FIG. 2 is an exploded perspective view showing the configuration of the electronic device 100.
  • the electronic device 100 includes a base 201, a touch panel 102, a support unit 202, and vibration units 210a and 210b.
  • the base 201 supports the touch panel 102.
  • the base 201 is configured by a member having rigidity that can support the touch panel 102 or the like, such as metal or resin.
  • the base 201 and the support portion 202 are provided as separate bodies, but the base 201 and the support portion 202 may be formed integrally. Further, the base 201 may be the display unit 101.
  • the electronic device 100 further includes, for example, a substrate 305 provided with a drive unit 301, an image processing unit 302, and a control unit 303.
  • the substrate 305 may be attached to the side of the base 201 opposite to the touch panel 102.
  • the drive unit 301 supplies a drive voltage to the vibration units 210a and 210b to vibrate the vibration units 210a and 210b.
  • the image processing unit 302 processes an image signal that is content to be displayed on the display unit 101.
  • the control unit 303 includes an information processing circuit such as a microcomputer and a storage unit that stores data such as a program and a moving image displayed on the display unit.
  • the display unit 101, the touch panel 102, the drive unit 301, and the image processing unit 302 are controlled.
  • the touch panel 102 has, for example, a rectangular shape, and the size thereof is, for example, 280 mm in the X direction, 180 mm in the Y direction, and 0.9 mm in the Z direction.
  • the material of the touch panel 102 is, for example, a laminated body of a film on which glass and sensor electrodes are formed.
  • the Young's modulus of the touch panel 102 is, for example, 70 GPa and the specific gravity is 2500 kg / m 3 .
  • Touch panel 102 detects an operator's touch operation. More specifically, the touch panel 102 has a main surface 102a, and the operator touches the main surface 102a of the touch panel 102 with a finger, a stylus, and / or the contact position on the main surface 102a. To detect. The detection of the contact position may be one, or a plurality of positions may be detected at the same time. As the touch panel 102, a known method such as a pressure-sensitive method, a capacitance method, an optical method, or a surface acoustic wave method can be used. The touch panel 102 is an example of a panel. The peripheral portion of the touch panel 102 is supported by the support unit 202.
  • the touch panel 102 may be an on-cell touch panel adhered to the display device 101, or may be an in-cell touch panel having a function of detecting a touch operation by the display unit 101 itself.
  • the touch panel 102 may be transparent or opaque. In short, the touch panel 102 only needs to have a function of detecting an operator's touch operation.
  • the support unit 202 contacts the periphery of the touch panel 102 and supports the touch panel 102 with respect to the base 201.
  • the support portion 202 is provided on the entire periphery of the touch panel 102.
  • the support portion 202 is made of a material having a certain strength and elastic force, such as resin, rubber, gel, or a spring element.
  • the support part 202 is composed of four sides. Specifically, the support unit 202 has a frame shape including a pair of opposed long sides 202L corresponding to the shape of the touch panel 102 and a pair of opposed short sides 202S. Thereby, a space 202 ⁇ / b> C surrounded by the support portion 202 is formed between the touch panel 102 and the base 201. The touch panel 102 can vibrate without contacting the base 201 by the space 202C.
  • the support part 202 includes a first region 202a and a second region 202b.
  • the first region 202a is located in a portion that becomes a vibration node when the touch panel 102 vibrates, and the second region 202b is located in a portion other than the vibration node.
  • the support unit 202 includes 2N (N is a natural number of 1 or more) first regions 202a.
  • N first regions 202a are located on each of the pair of long sides 202L.
  • the N first regions 202a located on one of the pair of long sides 202L and the N first regions 202a located on the other are on N straight lines parallel to the direction in which the short side 202S extends (Y direction). Each one is located.
  • the base 201 and the support portion 202 are provided as separate bodies, but the base 201 and the support portion 202 may be formed integrally.
  • a portion protruding from the base 201 so as to form the space 202C corresponds to the support portion 202.
  • the electronic device 100 includes two vibrating portions 210a and 210b.
  • the vibrating portions 210 a and 210 b are attached to the peripheral edge portion of the back surface 102 b of the touch panel 102. More specifically, the vibration units 210a and 210b are in the vicinity of the short side of the touch panel 102 and in the vicinity of the approximate middle point of the short side so that the longitudinal direction and the short side of the vibration units 210a and 210b are parallel to each other.
  • the touch panel 102 is vibrated in the vicinity of the short side of the support portion 202.
  • the vibration units 210a and 210b for example, piezoelectric elements, vibration motors, linear actuators, voice coil motors, artificial muscles, or the like are used.
  • the vibration units 210a and 210b may be anything that can convert electrical energy or the like into vibration energy.
  • FIG. 3 shows an example of the vibrating portions 210a and 210b when the vibrating portion is a piezoelectric element in the present embodiment.
  • the piezoelectric elements 210 a and 210 b include a piezoelectric body 212, a first terminal P, a second terminal N, a reference electrode 216, and a third terminal G.
  • the piezoelectric bodies 210a and 210b have a rectangular parallelepiped shape, for example, and have a mounting surface 212b and surfaces 212a, 212c, 212d, 212e, and 212f.
  • the mounting surface 212b and the surface 212a constitute a pair of principal surfaces parallel to each other in a rectangular parallelepiped.
  • the reference electrode 216 is provided so as to cover the entire mounting surface 212b.
  • the first terminal P, the second terminal N, and the third terminal G are provided on at least one of the surfaces 212a, 212c, 212d, 212e, and 212f for connection to the outside.
  • the first terminal P is provided on the surface 212a.
  • the surfaces 212c, 212d, and 212e are provided with a first external electrode 215a, a second external electrode 215b, and a third external electrode 215c, respectively.
  • FIG. 4 is a cross-sectional view of the touch panel 102 and the vibration unit 210a when the electronic device 100 in FIG. 2 is cut along A-A ′.
  • the vibration part 210b also has the same structure.
  • the vibration part 210 a is bonded with an adhesive material 250 such as an epoxy adhesive, a UV curable resin, or a double-sided tape so that the mounting surface 212 b faces the back surface 102 b of the touch panel 102.
  • an insulating material 250 is used.
  • the adhesive material 250 Since it is necessary to efficiently transmit the vibration of the vibration part 210a to the touch panel 102, the adhesive material 250 generally has high rigidity. However, if the rigidity is too high, distortion is likely to occur due to a difference in thermal expansion coefficient between the vibration unit 210 and the touch panel 102 at high temperatures and low sounds. For this reason, the adhesive member 250 has a rigidity smaller than that of the vibration part 210 a and the touch panel 102.
  • the vibrating section 210 a further includes a plurality of first internal electrodes 214 a and a plurality of second internal electrodes 214 b that are alternately arranged inside the piezoelectric body 212 at a predetermined interval.
  • the piezoelectric body 212 is divided into a plurality of layers sandwiched between the first internal electrode 214a and the plurality of second internal electrodes 214b.
  • the plurality of first internal electrodes 214a are electrically connected to the first terminal P via the first external electrode 215a.
  • the plurality of second internal electrodes 214b are electrically connected to the second terminal N via the second external electrode 215b.
  • the reference electrode 216 is electrically connected to the third terminal G through the third external electrode 215c.
  • the piezoelectric body 212 is made of a piezoelectric material such as lead titanate, lead zirconate titanate, or lithium niobate.
  • the first external electrode 215a and the second external electrode 215b are formed using a metal such as silver, palladium, copper, nickel, or a composite containing these metals by a method such as printing, sputtering, welding, metallicon, or the like. .
  • a part of the first external electrode 215a and the second external electrode 215b may be formed also on the mounting surface 212b side.
  • An insulating layer 251 is previously formed on the vibrating portion 210a so as to cover the reference electrode 216 so that the first external electrode 215a and the second external electrode 215b formed on the mounting surface 212b side do not come into contact with the touch panel 102a. May be.
  • the insulator layer 251 can be made of a resin such as an epoxy resin or an acrylic resin, or a leading edge material such as glass.
  • the vibration part 210a on which the insulator layer 251 is formed is bonded to the touch panel with an adhesive material 250.
  • the insulating layer 251 is not necessarily required when the influence of electromagnetic noise is small due to the sensing method of the touch panel 102a.
  • the first terminal P, the second terminal N, and the third terminal G of the vibration unit 210a are electrically connected to the drive unit 301, respectively.
  • the vibrating part 210a By applying a voltage to the piezoelectric element 212 through the first terminal P and the second terminal N, the vibrating part 210a expands and contracts according to the electric field due to the voltage. In general, it is necessary to apply a high voltage in order to expand and contract the piezoelectric body. However, the touch panel 102 is assumed to be touched by an operator with a finger or the like, and a very high voltage cannot be applied. For this reason, the vibration unit 210a has a plurality of first internal electrodes 214a and a plurality of second internal electrodes 214b alternately with the piezoelectric material interposed therebetween so that a sufficiently strong electric field can be applied to the piezoelectric material even at a low voltage. Has a laminated structure. Thereby, the space
  • the reference electrode 216 is located between the vibration unit 210 a and the touch panel 102.
  • the reference electrode 216 is formed on the surface on the touch panel 102 side of the vibrating portions 210a and 210b or the internal electrode closest to the touch panel 102.
  • the reference electrode 216 is formed on the surface of the vibration part 210a.
  • the reference electrode 216 may be separate from the vibration part 210a, and may be formed of a metal foil, for example.
  • the thickness of the piezoelectric body is a piezoelectric layer positioned on the outermost side than the thickness t i of the piezoelectric body layer sandwiched between the first internal electrode 214a and the second internal electrode 214b.
  • the body layer thickness t o may be larger.
  • FIGS. 5A and 5B show examples of voltage waveforms output by the drive unit 301.
  • FIG. A voltage having a waveform shown in FIG. 5A is applied to the first terminal P, and a voltage having a waveform shown in FIG. 5B is applied to the second terminal N.
  • the phases of these two voltages are reversed from each other. Since the voltage of the difference between the two voltages is applied to each layer of the piezoelectric body 212 of the vibration unit 210a, a voltage twice as large as each voltage is applied to each layer of the piezoelectric body 212 as shown in FIG. Applied.
  • a reference potential for example, a ground potential voltage is applied to the third terminal G. As a result, the reference electrode 216 is maintained at the ground potential voltage, and noise generation on the touch panel 102 can be suppressed.
  • FIG. 6A is a plan view of the touch panel 102 supported on the base 201 by the support portion 202, and FIG. 6B shows a B-B ′ cross section in FIG.
  • the width Wa of the first region 202a in the direction (Y direction) perpendicular to the longitudinal direction on the surface parallel to the base 201 is smaller than the width Wb of the second region 202b.
  • the first region 202a and the second region 202b are composed of the same member. For this reason, the first region 202a having a smaller width is less rigid than the second region 202b.
  • Rigidity refers to the ease of compression / extension in the direction perpendicular to the main surface 102a and the back surface 102b of the touch panel 102.
  • Touch panel 102 is vibrated by vibrating portions 210a and 210b. If the shape, size, material, fixing method of the panel 102 and the vibration frequency, vibration amplitude, vibration phase, etc. of the vibration parts 210a and 210b are appropriately selected, the touch panel 102 vibrates with a predetermined standing wave. In order to vibrate the entire touch panel 102 as uniformly as possible, the standing wave is vibrated in a second or higher order vibration mode. In the high-order vibration mode, a vibration bell having a large amplitude is generated at two or more specific locations, and a node having a small vibration amplitude is generated at one or more specific locations other than the end of the touch panel 102. .
  • a region near the vibration node is formed by the first region 202a, and the other region is formed by the second region 202b.
  • the first region 202a is arranged at the position of at least one standing wave node.
  • the touch panel 102 receives input from the operator. For example, when the operator touches the surface 102a of the touch panel 102 with a finger, the touch panel outputs information related to the finger contact and the position of the contact on the surface 102a to the control unit 303.
  • the control unit 303 receives an output from the touch panel 102 and outputs a command to vibrate the vibration units 210 a and 210 b to the drive unit 301. Thereby, the drive part 301 vibrates the vibration parts 210a and 210b, and the touch panel 102 vibrates. The operator recognizes that the operator's input to the touch panel 102 has been accepted by the vibration of the touch panel 102 by a tactile sensation felt by the fingers.
  • the control unit 303 Based on the information on the contact position, the control unit 303 outputs a command to the drive unit 301 so that the vibration conditions such as the amplitude of vibration, the vibration pattern, and the vibration mode of the vibration units 210a and 210b differ according to the contact position. May be. Thereby, the operator can recognize the difference in the position where the finger touches.
  • the control unit 303 also performs predetermined processing in the electronic device 100, for example. For example, a process for temporarily stopping a moving image displayed on the display unit, a process for fast-forwarding a moving image, a process for changing the audio size of the moving image, and the like are performed according to the position touched by a finger.
  • FIG. 7A shows an example of the vibration amplitude of the standing wave of the touch panel 102 when a sinusoidal wave having a voltage of 150 Vpp and a frequency of 370 Hz is applied to the vibration units 210a and 210b from the drive unit 301 in an opposite phase.
  • the reverse phase means, for example, a phase in which the vibration part 210b contracts when the vibration part 210a is extended.
  • the phase of the voltage applied to the vibration part 210a and the vibration part 210b is inverted.
  • FIG. 7B shows a vibration waveform at the center position in the Y direction, the horizontal axis indicates the distance in the x direction, and the vertical axis indicates the magnitude of the amplitude.
  • the standing wave generated on the touch panel 102 has four vibration nodes 501 and three vibration nodes 502 in the X direction.
  • Such a vibration mode is called an f30 mode.
  • the first digit of the subscript f indicates the number of nodes in the X direction
  • the second digit indicates the number of nodes in the Y direction.
  • the number of standing waves that can be generated on the touch panel 102 is not one, but standing waves of various modes can be generated.
  • the vibration mode may be determined not only from the uniformity of vibration, but also from the viewpoint that the frequency is easy to be felt by humans and the sound is difficult to hear.
  • the frequency at which humans can feel a tactile sensation is 100 to 500 Hz.
  • the frequency of vibration exceeds 500 Hz, noise is generated by the vibration of the panel.
  • a frequency of 500 Hz or less or 400 Hz or less may be selected.
  • the drive frequency is too different, a sense of incongruity occurs in the sense of touch. For this reason, when using a plurality of vibration modes, if the frequencies of the vibration modes to be selected are close to each other, such a sense of incongruity is unlikely to occur.
  • the vibration parts 210a and 210b are arranged on the touch panel 102 at a place where the vibration amplitude of the vibration mode to be used is large, a standing wave having a large amplitude can be excited efficiently.
  • a standing wave having a large amplitude can be excited most efficiently by arranging vibration parts on the antinodes 501 of four vibrations.
  • the vibration part is usually not transparent, the display of the display unit 101 on the back side becomes invisible when it is arranged at the center of the touch panel.
  • the vibration parts 210 a and 210 b are arranged at the end of the touch panel 102. Specifically, the touch panel 102 is disposed outside the display area of the display unit 101.
  • the end portion is not limited to a position close to the short side of the support portion 202, but may be a little inside the short side of the support portion as long as it is outside the display area. Also in that case, it is preferable to install at the end portion closer to the vibration antinode.
  • the touch panel 102 is arranged at the end in the X direction and in the center of the Y direction, or near the antinode of the vibration in the X direction at the end of the touch panel 102 in the Y direction. It is desirable to arrange in four places.
  • the vibration part may be provided at two places, or at one place, or at three or more places.
  • the vibration units 210a and 210b are arranged in the X direction. However, they may be arranged in the Y direction or in a direction including the Y direction and the X direction. Moreover, you may arrange
  • the vibration part to be driven is driven in the same phase or in the opposite phase according to the vibration mode of the standing wave to be excited and the position of the vibration part. For example, when arranging a plurality of vibration parts on the vibration antinode in the X direction, the vibration parts arranged on the third and fifth antinodes are arranged on the first antinode. What is necessary is just to drive in the same phase as the vibration part to perform, and what is necessary is just to drive the vibration part arrange
  • the touch panel 102 vibrates in the higher order mode. Since it vibrates in the higher order mode, the vibration node 502 exists, and the amplitude of vibration near the vibration node 502 is small. Therefore, in the present embodiment, the rigidity of the first region 202 a in the vicinity of the position of the vibration node 502 is made smaller than the rigidity of the second region 202 b supported at a position other than the vibration node 502. For this reason, the touch panel 102 easily vibrates in the vicinity of the node, that is, in the vicinity of the first region 202a, and the touch panel 102 can vibrate relatively greatly in the vicinity of the first region 202a. Therefore, variation in the magnitude of vibration depending on the position on the touch panel 102 can be reduced as compared with the conventional case.
  • the support part 202 is supporting the peripheral part of the touch panel 102 continuously over the perimeter. For this reason, water or dust does not enter between the base 201 and the touch panel 102. Thereby, it is possible to provide the electronic device 100 having excellent waterproofness and dustproofness.
  • the support unit 202 is formed of a single member and supports the touch panel 102. Thereby, a desired effect can be obtained with a small number of parts, the number of assembling steps can be reduced, and the cost of the electronic device 100 can be reduced.
  • the vibrating parts 210a and 210b have a reference electrode 216 on the mounting surface 212b, and the reference electrode is grounded to the ground level. For this reason, it can suppress by the reference electrode that the noise which may arise when driving the vibration parts 210a and 210b is transmitted to the touch panel 102, and the detection in the touch panel 102 can be performed stably.
  • the electronic device 100 includes the base 201, the touch panel 102, the support unit 202 that supports the touch panel 102 with respect to the base 201, and the vibration units 210a and 210b that vibrate the touch panel 102 at a predetermined frequency.
  • Support unit 202 includes a first region 202 a located at a vibration node of touch panel 102 and a second region 202 b located at a portion other than the node of touch panel 102.
  • the rigidity in the first area 202a of the support portion 202 is smaller than the rigidity in the second area 202b. For this reason, the touch panel 102 is likely to vibrate near the vibration node, and variation in the magnitude of vibration depending on the position on the touch panel 102 can be reduced as compared with the conventional case.
  • the touch panel 102 has a rectangular shape
  • the support unit 202 contacts the periphery of the touch panel 102 and supports the touch panel 102 with respect to the base 201.
  • the support unit 202 has a frame shape constituted by a pair of opposed long sides and a pair of opposed short sides, and a space surrounded by the support unit 202 is formed between the touch panel 102 and the base 201. Yes. For this reason, the touch panel 102 is stably supported by the base 201 and can vibrate.
  • the vibration units 210a and 210b vibrate the touch panel 102 in the vicinity of a pair of short sides in the space.
  • the support portion 202 includes 2N (N is a natural number of 1 or more) first regions 202a, and N first regions are located on each of the pair of long sides.
  • the N first regions 202a located on one of the pair of long sides and the N first regions 202a located on the other of the pair of long sides are N pieces parallel to the direction in which the pair of short sides extend. Each one is located on a straight line. Thereby, when the touch panel 102 vibrates in the high-order mode, the first region 202a can be disposed at the vibration node.
  • the first region 202a and the second region 202b of the support portion 202 are respectively composed of a first material and a second material, and the rigidity of the first material is smaller than the rigidity of the second material.
  • the cross section of the first region 202a perpendicular to the extending direction of the long side or the short side of the support portion 202 is smaller than the cross section of the second region 202b.
  • the width of the first region 202a in a direction perpendicular to the extending direction of the long side or the short side on a plane parallel to the base 201 is smaller than the width of the second region 202b.
  • the vibrating parts 210a and 210b are piezoelectric elements. Further, it is attached to the touch panel 102. Further, an electrode 216 connected to a reference potential is provided on a surface attached to the touch panel 102. Accordingly, it is possible to suppress noise that may be generated by driving the piezoelectric element from diffusing to the touch panel 102, and the touch panel 102 can detect the operation of the operator stably.
  • the vibration units 210a and 210b vibrate the vicinity of the antinode portion of the vibration of the touch panel 102. Thereby, the touch panel 102 can be vibrated efficiently. In addition, by vibrating in a high-order vibration mode, variation in the magnitude of vibration in the touch panel 102 can be suppressed.
  • the panel is a touch panel, and when the electronic device further includes a display unit, the electronic device of the present embodiment can be suitably applied to a portable information terminal such as a smartphone, an electronic book, or a tablet.
  • the electronic device 100 receives a signal indicating an input from the touch panel 102 when the operator designates an arbitrary position on the input surface of the touch panel 102 and the driving unit 301 that drives the vibration units 210a and 210b by contact, and the signal is displayed as a signal.
  • a control unit 303 that outputs a control signal for driving the vibration units 210 a and 210 b to the drive unit 301.
  • the control unit 303 outputs a control signal to the drive unit 301 so that the touch panel 102 vibrates under different vibration conditions depending on the position designated by the operator.
  • the operator can make a tactile sense that the touch panel 102 has accepted the operator's input, and can obtain excellent operability.
  • the piezoelectric element includes a piezoelectric body 212 having a mounting surface and at least one other surface, and a plurality of first elements alternately arranged at predetermined intervals inside the piezoelectric body 212.
  • An internal electrode 214a, a plurality of second internal electrodes 214b, a first terminal P electrically connected to the plurality of first internal electrodes 214a and provided on at least one other surface, and a plurality of second internal electrodes 214b Is electrically connected to the second terminal N provided on at least one other surface, the reference electrode 216 provided on the mounting surface of the piezoelectric body 212, and the reference electrode 216.
  • a third terminal G provided on the surface.
  • the portion of the piezoelectric body where the plurality of first internal electrodes and the plurality of second internal electrodes are arranged is divided into a plurality of layers by the plurality of first internal electrodes and the plurality of second internal electrodes, The outermost layer is thicker than the inner layer. Thereby, unnecessary resonance can be suppressed.
  • a tablet-type information terminal device has been described as an example of an electronic device, but the electronic device is not limited to this.
  • an electronic device including a touch panel such as a mobile phone, a PDA, a game machine, a car navigation system, and an ATM, may be used.
  • touch panel 102 has been illustrated and described as a panel, the panel is not limited to this. Any pad that has a flat surface such as a touch pad and receives an operator's input on the flat surface may be used.
  • the support unit 202 is not limited to the structure described in the above embodiment, and may have a structure other than the structure described in the above embodiment as long as the rigidity of the first region is smaller than the rigidity of the second region.
  • the first region 202a and the second region 202b of the support portion 202 are configured by the first material and the second material, respectively, and the rigidity of the first material may be smaller than the rigidity of the second material.
  • the first region 202a of the support portion 202 is not provided with a member constituting the support portion 202, so that the first region 202a is not provided.
  • the rigidity may be smaller than the rigidity of the second region 202b.
  • the rigidity of the first region 202a can be adjusted by changing the length of the first region 202a in the extending direction, that is, the interval between the second regions 202b sandwiching the first region 202a.
  • the thickness (the width in the z direction) of the first region 202a of the support portion 202 may be smaller than the thickness of the second region 202b.
  • the rigidity of the first region 202a is reduced by making the cross section of the first region 202a perpendicular to the direction in which the support portion 202 extends smaller than the cross section of the second region 202b. Also good. Specifically, as shown in FIGS. 8A and 8B, notches 220 may be provided on one or two surfaces that do not contact the touch panel 102 and the base 201. Further, as shown in FIG. 8C, a hollow portion 221 may be provided inside.
  • the cross section of the first region 202 a of the support unit 202 may have a chamfered part 223 on a side in contact with the touch panel 102.
  • the cross section of the first region 202 a of the support portion 202 may have a chamfered portion 223 on a side in contact with the touch panel 102 and the base 201.
  • the cross section of the 2nd support part 3b may be circular.
  • the support portion 202 is formed over the entire circumference, but may be formed only in part. In that case, the same effect can be obtained even if the rigidity is changed depending on the interval at which the support portion 202 is formed.
  • the first region 202 is disposed at a position suitable for the vibration node 502 of the f30 mode. However, when other modes are used, the first region 202 is disposed at a position suitable for the mode. May be arranged.
  • the plurality of vibration units 210 may be arranged equally on the four sides of the touch panel 102, or a plurality of sets may be arranged only on the short side or only on the long side. Alternatively, one first region 202a may be arranged on each of the short side and one of the long sides.
  • the present embodiment has been described with a single vibration mode, if a plurality of vibration modes are used properly, the same can be achieved by forming the first region 202 in a portion corresponding to a node of one of the vibration modes. An effect is obtained.
  • the first region 202 may be formed so as to cover both of the nodes.
  • the vibrating portions 210a and 210b are attached to the touch panel 102.
  • a thin transparent piezoelectric member may be formed on the touch panel 102 by a method such as sputtering, and used as the vibrating portion.
  • the vibration units 210a and 210b are physically connected to the touch panel 102
  • the vibration units 210a and 210b do not have to be directly connected to the touch panel 102, and the touch panel 102 is vibrated. If possible, it may be connected to a member other than the touch panel 102.
  • vibration parts when there are a plurality of vibration parts, some of them may be suspended. Thereby, power consumption can be reduced.
  • phase difference 0 degree examples of the same phase (phase difference 0 degree) and the opposite phase (phase difference 180 degrees) have been shown. However, it is optimal to maximize or minimize the vibration amplitude of a specific part of the touch panel 102. In order to adjust to an appropriate amount, an arbitrary phase difference other than 0 degrees and 180 degrees may be set.
  • the drive unit 301 may vibrate the vibration units 210a and 210b with a waveform obtained by modulating not only a sine wave but also an envelope of a sine wave with an arbitrary waveform. Thereby, the user can feel various tactile sensations such as hard, soft, and rough.
  • the present disclosure can be applied to an electronic device having a contact type input surface for various uses.
  • the present disclosure is applicable to portable information terminal devices such as tablets, electronic books, and smartphones, computer displays, car navigation devices, ATMs, ticket vending machines, and the like.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Position Input By Displaying (AREA)
  • User Interface Of Digital Computer (AREA)

Abstract

La présente invention concerne un dispositif électronique (100) comportant une base (201), un écran (102), un élément support (202) qui supporte l'écran sur la base (201), et des vibreurs (210a, 210b) qui font vibrer l'écran (102) à une fréquence prescrite. L'élément support (202) comporte: des premières régions (202a) situées aux endroits où se produisent les nœuds de vibration dans l'écran (102) et des secondes régions (202b) situées à l'extérieur desdits nœuds. La rigidité de l'élément support (202) dans les premières régions (202a) est inférieure à sa rigidité dans les secondes régions (202b).
PCT/JP2012/006636 2011-10-19 2012-10-17 Dispositif électronique WO2013057940A1 (fr)

Priority Applications (4)

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CN201280004430.XA CN103282868B (zh) 2011-10-19 2012-10-17 电子设备
JP2013526253A JP5343179B1 (ja) 2011-10-19 2012-10-17 電子機器
US13/919,053 US8970534B2 (en) 2011-10-19 2013-06-17 Electronic device
US14/040,934 US9117994B2 (en) 2011-10-19 2013-09-30 Electronic device

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JP2011229365 2011-10-19
JP2011-229365 2011-10-19

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WO2013057940A1 true WO2013057940A1 (fr) 2013-04-25

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US8970534B2 (en) 2015-03-03
JPWO2013057940A1 (ja) 2015-04-02
CN103529990B (zh) 2017-05-10
US9117994B2 (en) 2015-08-25
US20140028157A1 (en) 2014-01-30
JP5570640B2 (ja) 2014-08-13
CN103529990A (zh) 2014-01-22
JP2014063992A (ja) 2014-04-10
JP5343179B1 (ja) 2013-11-13
JP2014099210A (ja) 2014-05-29
US20130271412A1 (en) 2013-10-17
CN103282868B (zh) 2016-03-23
CN103282868A (zh) 2013-09-04

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